fuel pump resistor relay question
10-22-03, 10:46 PM
#1
primitive screwhead
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fuel pump resistor relay question
Anyone ever have their fuel pump resistor relay on their S4 TII go bad? I'm wondering what the symptoms of that would be like, if anyone knows... thanks
10-23-03, 04:51 AM
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I'm a boost creep...
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The system is fail-safe, so if the relay stops working or the ECU stops sending a signal, the fuel pump will receive full battery voltage all the time. This would cause you to run rich most of the time, since full voltage is normally only used under full load.
10-23-03, 10:18 AM
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primitive screwhead
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Hmm, ok... do you happen to know what deviation from the FSM resistances would constitute a failure of the resistor relay? Mine are slightly off.
FSM:
A-B = 0 ohm
C-D = 60ish-90ish ohms (can't remember exactly)
E-F = 0.64 ohm
Mine:
A-B = 0.8 ohm
C-D = 70ish ohms
E-F = 0.2 ohm
In other words, does that make mine broken?
FSM:
A-B = 0 ohm
C-D = 60ish-90ish ohms (can't remember exactly)
E-F = 0.64 ohm
Mine:
A-B = 0.8 ohm
C-D = 70ish ohms
E-F = 0.2 ohm
In other words, does that make mine broken?
10-23-03, 10:37 AM
#4
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i think yours are ok, generally the resistance ranges are broader than what mazda says
mike
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